Bolt and nut lock



(No Model.) l

'0. E. BELL.

Y* BOLT ANDNUT LocK. No. 268,607. Patented Dec. 5', 1882.

WITNESSES v INVEN'I'OR f77/M, a GMW y ATTORNEYS.

UNITED VSTATES PATENT OFFICE.,

CHARLES E. BELL, OF GREENFIELD, OHIO.

BOLT AND NUT LOCK.

SPECIFICATION forming part of Letters Patent No. 268,607, dated December 5, 1882.

(No model.)

To all lwhom it may concern Beit known that I, CHARLES E; BELL, ot' Greentield, in the county of Highland and State of Ohio, have invented a new and Improved Bolt and N ut Lock, ofv which the following is at'ull, clear, and exact description.

The object ofthe invention is to combine a nut and bolt with a binding-screw, so that neither bolt nor nut can Work loose.

Reference is to be had to the accompanying drawings. forming part of this specification, in which similar letters of reference indicate corresponding parts in all the iigures.

Figure 1 is a longitudinal section ot' a bolt contrived with my improved locking device, together with a couple of bridge-plates or bars to be fastened by the bolt. y Fig. 2 is a part-lysectional elevation of amoditied form ot' the bolt and nut., and Fig. 3 is an elevation of the head ofthe bolt ot' Fig.2, and Fig. 4 shows my invention as applied to a long bolt.

The boltais constructed with a cent-ral bore, b, through it longitudinally, which is internally screw-threaded partly or wholly throughout its length, the `threads being pitched reversely to the threads/c onpvllchthe soclret cA qt'mthe nut f, threaded to receive the end g of a bindingscrew, It, which is screwed in from the head of the bolt by a Wrench, i, or screw-driver, after nut d is screwed on.

For long bolts the application of my invention is shown in Fig. 4, in which the socket j' is extended to form a bore entirely through the nut, and the bore d of the bolt extends into the end of the same but ashortdistance, forining a socket into which, through the nut, the locking-screw h is inserted. It will be seen that any tendency of the nut d or bolt a to work loose will be resisted by the tightening ot' the binding-screw, which will thus eiectually keep the nut d tight on the bolt.

I am aware that a nut has been locked to a bolt by conicall y tapping the threaded inside of nut, splitting the threaded centrallv-pert'orated end of bolt, and forcing a conical screw between said split ends; also, that two screws have been locked by screwing them together, one Within the other, from opposite directions and with reversed threads; but

What I claiin as new is- The combination ot' a bolt having a central bore entirely through it, and reverse threads on the inside and outside of its lower end, the nut d, having the reversed threads ef, and the locking-screw li, having a thread, g, corresponding to the internal thread of screw-bolt and the nut-threailf, whereby the nut is prevented from turning in either direction until the locking`oolt is withdrawn, as described.

CHAS. EDWIN BELL.

VWitnesses:

W. W. BELL, JNO. McGAnaAUGi-L 

